All 4 companies
A–Z by legal name| Company | Registry number | Registered | Status | City |
|---|---|---|---|---|
| ADVANCED ENGINEERING & MANUFACTURING, INC. | 0000012483 | 1981-11-10 | Dissolved | X |
| CLARK OIL & REFINING CORPORATION | 0000013714 | 1981-10-29 | Dissolved | X |
| DAKOTA HOSTS INTERNATIONAL | 0000020105 | 1981-08-31 | Dissolved | X |
| ENSOURCE INC. | 0000014373 | 1981-05-22 | Merged | X |